<template>
  <div class="">
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>

      <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="基本属性"></el-step>
        <el-step title="基本图片"></el-step>
        <el-step title="基本内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="tabPosition"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <!-- 基本信息面板 -->
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品分类：" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="treeProps"
                @change="handleChange"
              >
              </el-cascader>
            </el-form-item>
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
          </el-tab-pane>
          <!-- 商品参数面板 -->
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <!-- 商品属性面板 -->
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <!-- 商品图片面板 -->
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadUrl"
              list-type="picture-card"
              :on-preview="handlePictureCardPreview"
              :on-remove="handleRemove"
              :headers="headersObj"
              :on-success="handleSuccess"
            >
              <i class="el-icon-plus"></i>
            </el-upload>
            <el-dialog :visible.sync="dialogVisible">
              <img width="100%" :src="dialogImageUrl" alt="" />
            </el-dialog>
          </el-tab-pane>
          <!-- 商品内容面板 -->
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce"> </quill-editor>
            <el-button type="primary" class="btnAdd" @click="addItem">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      activeIndex: '0',
      tabPosition: 'left',
      catelist: [],
      treeProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '请输入商品价格', trigger: 'blur' }],
        goods_number: [{ required: true, message: '请输入商品数量', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '请输入商品重量', trigger: 'blur' }],
        goods_cat: [{ required: true, message: '请输入商品分类', trigger: 'blur' }]
      },
      manyTableData: [],
      onlyTableData: [],
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      dialogImageUrl: '',
      dialogVisible: false,
      headersObj: {
        Authorization: window.sessionStorage.getItem('token')
      }
    }
  },
  created() {
    this.getCateList()
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[this.addForm.goods_cat.length - 1]
      }
      return null
    }
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories', {
        params: { type: 3 }
      })

      if (res.meta.status !== 200) {
        return this.$message.error('获取父级分类数据失败！')
      }
      this.catelist = res.data
    },

    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
        return false
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类！')
        return false
      }
    },
    async tabClicked() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'many' }
        })

        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }
        res.data.forEach(item => {
          item.deleteTime = ''
          item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
        console.log(this.manyTableData)
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'only' }
        })

        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性列表失败！')
        }
        this.onlyTableData = res.data
      }
    },
    handleRemove(file, fileList) {
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(item => item === filePath)
      this.addForm.pics.splice(index, 1)
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url
      this.dialogVisible = true
    },
    handleSuccess(response, file, fileList) {
      if (response.meta.status !== 200) {
        fileList.forEach((item, index) => {
          if (item.name === file.name) {
            fileList.splice(index, 1)
          }
        })
        return this.$message.error(response.meta.msg)
      } else {
        const picInfo = response.data.tmp_path
        this.addForm.pics.push(picInfo)
      }
    },
    addItem() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          this.$message.error('请填写必要的表单项')
        }
        const form = JSON.parse(JSON.stringify(this.addForm))
        form.goods_cat = form.goods_cat.join(',')
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkout {
  margin: 0 10px 0 0 !important;
}
.btnAdd {
  margin-top: 80px;
}
</style>
